Charles k



No. 6l5,225. Patented Nov. 29, I898. C. PICKLES.

STEP-OVER CAR SEAT.

(Application filed. Jan. 14, 1898.)

(No Model.)

li'ilfniaz UNITED STATES PATENT OFFICE.

CHARLES K. PICKLES, OF ST. LOUIS, MISSOURI, ASSIGNOR TO SAMUEL M. DODD, OF SAME PLACE.

STEP-OVER CAR-SEAT.

SPECIFICATION forming part of Letters Patent 0. 615,225, dated November 29, 1898. Application filed January 14,1898. Serial No. 666,687- (No model.)

To all whom, it may concern:

Be it known that I, CHARLES K. PICKLES, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Step- Over Car-Seats, (Case No. 5,) of which the following is a specification.

The present invention relates to that type of car-seats in which the back is adapted to be reversed with relation to the seat portion, such seat portion having a tilting movement in unison with the movement of the back to attain a maximum amount of seating capacity and a proper slope of the seat portion in either position of the car-seat.

The objects of the present improvement are to provide a simple and durable operating mechanism between the seat-back, the supporting base, and the seatproper,whereby the movements of the different parts are elfected in a direct and positive manner without any liability to becoming inoperative and strained or broken in the ordinary manipulation of the car-seat. I attain such objects by the mechanism illustrated in the accompanying drawings, in which-- Figure 1 is an end elevation of a step-over car-seat embodying the present invention, one position of the back being shown in full lines and the other position in dotted lines;

Fig. 2, a detail perspective View of the counterpart arms that support the back and illustrating the connections between the lower ends of said arms; Fig. 3, a detail elevation of the curved slides of the seat portion, the rails of the supporting base or standard being shown in section; Fig. 4:, a detail elevation of the counterpart arms that support the back, with their connections, to the chair base or standard, the parts being shown in a position midway of theirstep over move-' ment; Fig. 5, a similar view showing the parts at the end of their movement in one direction; Fig. 6, a detail section at line 6 6, Fig. at.

Similar numerals of reference indicate like parts in the several views.

Referring to the drawings, 1 represents the supporting base or standard of the car-seat, of any usual and approved construction, provided with a centrally-arran ged pivot stud or bolt 2 and a cam-shaped track or slot 3, symmetrically arranged with relation to the pivot 2. When the present invention is applied to a shifting type of car-seat, as illustrated in Figs. 1 and 3 of the drawings, the supporting-base 1 will be provided wit-h supporting-guides 4 for the usual curved or quadrant slides 5 on the under side of the seat proper.

6 is the seat proper of the usual type and which in the construction shown is adapted to shift from side to side in a curved path, being provided with the usual slides 5, as heretofore mentioned for such purpose.

7 is the seat-back, which in the construction shown is of the step-over type and finished or upholstered alike on both sides and provided with across-head 8, preferably mid way its height, for the pivotal attachment of the back-supporting arms.

9 are the back-supporting arms, of a reversed counterpart construction, their upper ends having pivotal connections to the crosshead 8 of the back at points equidistant from the median line of the back, while at or near their lower ends they are pivotally connected to the outer ends of an equalizing-bar 10, that is centrally pivoted on the pivot stud or bolt 2 of the supporting-base 1. In my preferred construction as shown in the drawings the lower ends of the arms will extend past their point of pivotal attachment to the equalizingbar 10 and be connected together by a supplementary connecting-bar 11, as shown, that is adapted to move upon the cam-shaped track 3 of the supporting-base 1 to impart the requisite movements to the arms simultion of the parts. I

In the construction shown in the drawings with the vibrating movement of the back from one side to the other of the seat the supplementary bar 11.0r the lower ends of the arms 9 will ride upon the cam-track 3 and impart to the said arms a continuous and concurrent end movement in opposite directions, and by the connection of said arms at points equidistant from the median line of the back the opposite end movements of said arms in opposite directions will impart a simultaneous oscillating movement to the back coincident .taneously in opposite directions in an operawith the vibratory movements of the same from one side of the seat to the other, the upturned terminals 3 of the cam-track acting as steps or abntments to limit the movement of the back-supporting arms, as clearly indicated in Fig. 5 of the drawings.

\Vith the present improvement the continuous and concurrent movement of the backsupporting arms, as above described, is a material feature of the present invention in that it positively insures a proper movement of the back and prevents any retrograde vibration of said back upon the upper ends of the back-supporting arms, which would be sure to cause a binding and probable breakage of the connections between the parts.

In the construction shown in the drawings 12 is a centrally-arranged stud on the supplementary connecting-link 10 of the backsupporting arms that is adapted to have engagement in a vertically-elongated slot or recess 13 in the curved slide 5 of the seat proper, and thus afford means for imparting the required movement to the seat in a curved path simultaneous with the vibratory movement of the back from one side of the seat to the other.

\Vith the formation of the back-supporting arms 9, as shown in the drawings, the same are adapted to rest against and support each other in either position of the back, and as so arranged afford greater stifliness and rigidity to the parts and at the same time constitute a stop to prevent the further vibratory movement of the arms and the oscillatory movement of the back.

It is evident that with very slight modifications the construction of the present invention as illustrated in the drawings can be applied to that type of reversible seat-backs that have a semicircular oscillation during their vibration from one side of the seat to the other, and also that the same is equally applicable to that type of car-seats in which the seat proper has an oscillating movement as distinguished from a shifting movement.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a step-over car-seat, the combination of a seat, a supporting-standard, a back, a pair of counterpart backsupporting arms having independent pivotal attachment to the standards and to the back, equidistant from the median line of the back, and a camtrack carried by the standard, contacting with said arms and adapted to impart continuous and concurrent end movement to the same in opposite directions, substantially as set forth.

2. In a step-over car-seat, the combination of a seat, a supporting-standard, a back, a pair of back-supportin g arms having independent pivotal attachment to the back, equidistant from the median line of the back, an equalizing-bar journaled on the standard and pivotally connected to said arms, the arms being extended beyond their points of pivotal attachment, and a cam-shaped track engaging the arms below their points of pivotal attachment, substantially as set forth.

3. In a step-over car-seat, the combination of a seat, a seat-supporting standard, a back, a pair of back-supporting arms having independent pivotal attachment to the back, equidistant from the median line of the back, an equalizing-bar journ aled on the standard and pivotally connected to said arms, the arms being extended beyond their points of pivotal attachment, a supplementary link attached to the lower ends of the arms and having operative engagement with the seat and means for imparting continuous and concurrent movement to said arms in opposite directions, substantially as set forth.

In testimony whereof witness my hand this 12th day of January, 1898.

CHARLES K. PICKLES.

In presence of- E. J. OBRIEN, ROBERT Bonus. 

